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Trombones commonly contain copper, since they are typically made from brass. Brass is an alloy, made of copper and zinc - mostly copper. Most all trombones plated in nickel, black nickel, silver or gold are still brass underneath.

FYI: "Gold brass" is an uninformed way of referring to yellow brass, a common alloy composition of 67% copper and 33% zinc, and is not actually gold. Additionally, some Trombone bells have a red color. This just means that there is more copper in the brass composition, more like 85% copper, 15% zinc. This redder color is often referred to as "Rose Brass" or "Red Brass". Although, true red brass is not brass, but what is known as gunmetal, an alloy that contains copper, zinc, tin & lead.

BTW: Bronze and brass are similar, as they both contain copper. However, bronze is an alloy of copper and tin, instead of copper and zinc.

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14y ago

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